Analisis Kestabilan Frekuensi pada Sistem Tenaga Listrik Inersia Rendah

Rio, Arif Pambudi (2024) Analisis Kestabilan Frekuensi pada Sistem Tenaga Listrik Inersia Rendah. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5022201024-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2026. Download (1MB) | Request a copy

Abstract

Energi baru terbarukan diharapkan sebagai solusi dalam bidang energi untuk mengurangi penggunaan energi fosil yang tidak ramah lingkungan. Di samping itu, pengintegrasian EBT dalam sistem tenaga listrik dapat menyebabkan inersia sistem menjadi rendah. Ketika inersia suatu sistem tenaga listrik rendah, maka fluktuasi frekuensi semakin besar ketika terjadi kelebihan beban, sehingga diperlukan pelepasan beban menggunakan relai Under Frequency Load Shedding (UFLS). Pengaturan UFLS konvensional dinilai tidak efektif. Hal tersebut dikarenakan jumlah beban yang dilepaskan pada setiap bus dan di setiap tahapannya cenderung sama. Oleh sebab itu, penelitian ini melakukan pengaturan UFLS yang tepat dan adaptif dalam melakukan pelepasan beban ketika terjadi gangguan kelebihan beban. Metode pelepasan adaptif adalah metode pelepasan beban yang penentuan parameter dari UFLS-nya disesuaikan berdasarkan kondisi sistem. Penggunaan metode pelepasan beban adaptif diharapkan agar nadir frekuensi dapat lebih mendekati frekuensi normal dari pada metode pelepasan beban konvensional ketika terjadi kelebihan beban. Model sistem yang digunakan adalah sistem South East Australia 14-Generator Model dengan diasumsikan saluran interkoneksi dari Area 3 ke Area 5 terputus, sehingga sistem tenaga listrik pada Area 5 menjadi operasi terpulau (islanding operation). Penelitian ini dilakukan dengan tiga skenario, yaitu operasi terpulau inersia 5.500 MWs, 5.000 MWs dan 4.500 MWs. Hasil penelitian menunjukkan bawah dengan menggunakan metode pelepasan beban adaptif, nadir frekuensi pada setiap skenario satu, dua, dan tiga dapat naik sekitar 0,6%. 0,9%, dan 0,8% berturut-turut.
======================================================================================================================================
Renewable energy is anticipated as a solution in the energy sector to reduce the use of environmentally unfriendly fossil fuels. However, the integration of renewable energy into the power system can lead to low system inertia. When a power system has low inertia, frequency fluctuations become more significant during overloading events, necessitating load shedding using Under Frequency Load Shedding (UFLS) relays. Conventional UFLS settings are considered ineffective because the amount of load shed at each bus and at each stage tends to be the same. Therefore, this study proposes an accurate and adaptive UFLS configuration for load shedding during overload disturbances. The adaptive shedding method adjusts the UFLS parameters based on system conditions. The use of adaptive load shedding is expected to bring the frequency nadir closer to the normal frequency compared to conventional load shedding methods during overloading. The system model used in this study is the South East Australia 14-Generator Model, with the assumption that the interconnection line from Area 3 to Area 5 is disconnected, resulting in an islanding operation for the power system in Area 5. The study is conducted with three scenarios: islanding operation with inertia of 5.500 MWs, 5.000 MWs, and 4.500 MWs. The results show that using the adaptive load shedding method, the frequency nadir in scenarios one, two, and three can increase by approximately 0,6%, 0,9%, and 0,8%, respectively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Low Inertia, Load Shedding, Transient Stability Inersia Rendah, Pelepasan Beban, Stabilitas Transien
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves).
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Rio Arif Pambudi
Date Deposited:	30 Jul 2024 04:21
Last Modified:	30 Jul 2024 04:21
URI:	http://repository.its.ac.id/id/eprint/110349

Actions (login required)

View Item